With healthmonitor associated to a ssh lb pool, ssh connections to the vip always fail

[Vedamurthy Joshi]

R1.10 Build 39

LB sshpool1 has backend IPs 200.1.1.2 and 200.1.1.3 serving ssh port 22 . vip is 201.1.1.4

Without any health monitor applied, i can see that load balancing happening between 200.1.1.2 and 200.1.1.3

But when the below TCP HM was applied, ssh to 201.1.1.4 always fails saying
"ssh_exchange_identification : Connection closed by remote host"

root@nodec22:~/github/mine4/contrail-test# neutron lb-healthmonitor-show $hm1_id
+----------------+--------------------------------------+
| Field | Value |
+----------------+--------------------------------------+
| admin_state_up | True |
| delay | 100 |
| expected_codes | 200 |
| http_method | GET |
| id | 1b4e9c49-4c24-411c-ae5a-5d249969f086 |
| max_retries | 2 |
| status | ACTIVE |
| tenant_id | 7ecbedd2d3d443b68fe2c75fef8ab395 |
| timeout | 10 |
| type | TCP |
| url_path | / |
+----------------+--------------------------------------+
root@nodec22:~/github/mine4/contrail-test#

Testbed :
==========
env.roledefs = {
    'all': [host1, host2, host3, host4, host5],
    'cfgm': [host1,host4,host3],
    'openstack': [host2],
    'control': [host1,host4],
    'compute': [host3,host4, host5],
    'collector': [host1,host4,host3],
    'webui': [host1],
    'database': [host1,host4,host3],
    'build': [host_build],
}

env.hostnames = {
    'all': ['nodec22', 'nodeg30', 'nodeg29', 'nodeh4', 'nodeh5']
}

root@nodec22:~/github/mine4/contrail-test# nova list
+--------------------------------------+--------------+--------+------------+-------------+---------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+--------------+--------+------------+-------------+---------------------+
| a32e1188-2bd5-4ee6-b82c-f0eb4d63ed97 | backend_vm1 | ACTIVE | None | Running | backend1=200.1.1.2 |
| b972799e-05e1-4097-95c3-c3ee488cd0a5 | backend_vm2 | ACTIVE | None | Running | backend1=200.1.1.3 |
| f64e6991-7609-45d8-ae28-13312a9f3854 | frontend_vm1 | ACTIVE | None | Running | frontend1=201.1.1.2 |
| c7bb2430-b471-4c87-ba4e-c3dea92b2c09 | frontend_vm2 | ACTIVE | None | Running | frontend1=201.1.1.5 |
+--------------------------------------+--------------+--------+------------+-------------+---------------------+
root@nodec22:~/github/mine4/contrail-test#

root@nodec22:~/github/mine4/contrail-test# neutron lb-vip-show sshvip
+---------------------+--------------------------------------+
| Field | Value |
+---------------------+--------------------------------------+
| address | 201.1.1.4 |
| admin_state_up | True |
| connection_limit | -1 |
| description | |
| id | 3df043b3-d504-4cff-b687-127f919c6d06 |
| name | sshvip |
| pool_id | 62c7a511-3dbd-4203-bd53-9663b0c41228 |
| port_id | eb2d83a3-059a-43d8-9401-07cc3d179fc0 |
| protocol | TCP |
| protocol_port | 22 |
| session_persistence | |
| status | ACTIVE |
| subnet_id | 7b667b8f-cfb5-466d-a2c6-1589d6d73746 |
| tenant_id | 7ecbedd2d3d443b68fe2c75fef8ab395 |
+---------------------+--------------------------------------+
root@nodec22:~/github/mine4/contrail-test#